Mixing-valve for internal-combustion engines.



'No. 887,422. PATENTED MAY 12, 1908.

J. J. POWER.

MIXING VALVE FOR INTERNAL COMBUSTION ENGINES.

' APPLICATION TILED JAN. 9 1905..

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No. 887,422. PATENTED MAY 12, 1908.

J. J. POWER.

' MIXING VALVE FOR INTERNAL COMBUSTION ENGINES.-

APPLICATION IILED JAN. 9, 1905.

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INVENTOR A TTORNEYJ,

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JEFFREY 1. POWER, OF MADISON, WISCUNSIN V MIXING-VALVE FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented May 12, 1908.

Application filed January9, 1905. Serial No. 240,163.

To all whom it may concern:

Be it known that I, JEFFREY J. POWER, a

citizen of the United States, residing at Madison, county of Dane, and State of Wisconsin, have invented new and. usefiul Improvements in Mixing-Valves for Internal-Combustion Engines, of which the following is a specifiform of construction in which the flow of air will not bematerially obstructed by the devices controlling the admission of the liquid and in which a direct air passage of maximum air ca acity may be used and the flow of the liquid i'egulated in accordance with the load, a substantially perfect mixture of maxi mum explosiveforce being secured when the engine is runnin at full load.

In the following description reference is had to the accompanying drawings in which,

Figure 1 is a side View of my invention partly in'section on the axis of the air inlet and oil ducts. Fig. 2 is a plan view of the same. Fig. 3 is an end view. Fig-.4 is a detail view showing a valve actuating float shield. Figs. 5 and 6 are enlarged detail sectional views showing a regulating stem adapted for different variations. Fig. 7 is a detail yiew, partly in section, illustrating means for heating the liquid hydro carbon preparatory to its vaporization.

Like parts are identified by the same reference characters throughout the several views.

1 is a cylinder of a gas engine. The piston 2 is indicated by dotted lines.

3 is an air inlet pipe, and 4 is a feed pipe for oil-0r other fluid hydro carbon rojecting into the air inlet pipe 3 substantial y at right angles to the axis of the latter and provided with an aperture 5 through which the fluid is fed into the path of the air currents entering the engine cylinder through the pipe 3. The pipe 4 receives the hydro-carbon from any suitable source of pressure sup 1y. A valve 6 controls the discharge of t e fluid from the aperture 5. The valve 6 is provided with a stem 7 which fits loosely in a tubular aperture in the guide sleeve 8 and is adapted to abut a regulating screw 9which has screw, threaded engagement with said sleeve and is adapted to limit the movement of the valve stem and valve.

In the construction shown, the valve stem is vertically disposed and arranged with the valveat its lower end so that it will drop by gravity to its seat, thus automatically cutting off the flow of hydro-carbon, except when lifted by some other force than the fluid itself, the weight of the valve and connected parts being sufficient to overcome the pressure of the fluid in the small aperture 5. he valve stem is provided with an inclined float shield 10 having a relative pitch in the direction of air movement and the side of the passage on which the valve is located. This float is preferably apertured and at the point ofits attachment with the valve stem is almost entirely cut away to allow a free assage for the air, and whereby a portion 0 the liquid escaping through the aperture 5 is permitted to pass the float as it spurts through theaperture under the pressure of the supvided with one large perforation in its outer end and three large perforations in its inner end, while the central portion of the float at each side is cut out along curved lines giving to the entire float the general outline of the figure eight. Various modificatlons in design and in the number and size of the perfora- .tions will suggest themselves to an ordinary mechanic, an I do not limit the scope of my invention in this respect. The style of shield shown and described is, however, simple in construction and eflicient in action. i

The shield is preferably ri idly secured to the valve stem and both en s of the sleeve are preferably inclined along curved lines with increasing inclination toward the ends. The walls of the air inlet pipe 3 are relied upon to prevent the valve and shield from rotating. During the suction stroke of the engine piston the air is drawn throu h the pipe 3 and the float shield 10 is lifted by the air current in passing, thus admitting a supply of liquid hydro carbon and concentrating the air current upon the liquid which is vaporized and thoroughly mixedwith the air upon entering the engine cylinder. The perforations in the float shieldsub-divide the air current and facilitate mixing the-air and hydro carbon va )or.

The tubular sleeve 8 has exterior screw p in correspondence with the size of the engine series of apertures whereby the throw of the treme variation in adjustment may be sefrom'tlie engine itself by means-of a pulley valve is mounted on" a fulcrum pin 32 of the threaded enga ement with a fixed support 11 preferably a so comprising a sleeve rigidly secured in an aperture formed in'the air inlet pi e 3. The adjusting screw 9 is screwed into t e sleeve 8 until it strikes the valve stem 7 and is turned backwardly for a short distance and locked to the sleeve 8 by means of a thumbnut 13. An arm 14 is rigidly connected' with the sleeve 8, being preferably screwed thereon and locked thereto by means of a lock nut 15. By swinging the arm 14, the sleeve 8 is rotated in its screw threaded hearings in sleeve 11 and by moving the arm 14 back and forth a slightvertical variation is secured in the position of the adjusting screw 9 and correspondingly in the lift of the valve 6 and valve stem 7. This adjustment is controlled by means of'centrifugal governing wei hts 18 which ar'e'li'hked with a driving pul ey 19 and a ring 20, both rotatably IIlOllIltGdOll the air inlet pipe 3, as shown in the drawings, the ring 20 being free to move longitudina 1y along the pi e 3. The movement of the ring 20 along t e pipe 3 is transmitted to the regulating arm 14 by means of a link 23, lever 24 and link 25. The lever 24 and arm 14 are preferably provided with a arm 14 may be varied at pleasure.

' 27 are set screws adapted to serve as stops to limit the movement of the lever 24.

Referring to Figs. 5 and 6 it will be observed that the construction of the sleeves 8 shown in these figures is the same, with the exception that in Fig. 6 the eXteriorscreW threads of the sleeve 8 and the interior threads of the sleeve 11 have a greater pitch than in Fig. 5. By providing sleeves with screw threads having a different pitch an ex cured by substituting one sleeve foranother to which the device is to be applied.

It will be observed that the valve seats and valves in these two views are of different sizes. By providing interchangeable valve seats and valves in sets of different sizes, I- am enabled to regulate the feed of hydrocarbon without altering .the distance of valve movement. This is of great importance in securing an accurate control of the feed by means of the speed governor ('ie, a

governor the operationof which depends on,

the speed of the engine). It will, of course, be understood that the pulley 19 is driven 30 on the shaft 33.

Referring to Fig. 1 it will'be observed that a damper valve 31 is interposed between the hydro-carbon valve and the engine. This lever 24 and is actuated by said lever through the fulcrum. In this manner I am enabled to not only vary the sup ly of hydro-carbon to the engine, but to a so'vary the sup-- ply of air so that the proportions of air and hydro carbon may-be kept approximately uniformunder all conditions.

Referring to Fig. 7 it will be observed that i the exhaust pipe 3'5 of the-engine is provided with a chamber 36-. The liquid hydro-carbon is caused to flow from a reservoir 37 through a pipe 38 td a coil 39 in the chamber I 36, with which coil the feed pipe 4 connects.

'W'ith this arrangement the hydro-carbon with; a valve controlling the flow of fluid through said aperture and a float connectedv with-said valve said float being located in said passage and arranged with an inward pitch in the direction of air movement and of the side of the passage occupied by the valve, and being held from rotating by the walls of the passage.

2. A mixing valve for internal combustion engines comprising the combination with the inclosing walls of an air inlet passage provided with a duct for fluid hydro-carbon; a valve controlling the flow of fluid through said duct; a float connected to operate said valve; and a guide for the valve; said float being obliquely inclined in the direction of the air currents in said passage, and arranged to concentrate such currents upon 'tihe fluid hydro carbon entering through said not. 1

3. valve for internal combustion engines com rising the combination with the inclosing wa s of an air suction passa e. provided with a duct for fluid hydro-car on; -a

valve controlling the flow oi fluid. through.

said duct; and a float connected with the valve and arranged obliquely across the path of the air currents in said passage, said float being reduced in area adjacent to the valve and symmetrically balanced with reference to the air pressure, whereby the float may be lifted by the air current without rotation.-

4. A mixing valve for internal ombustion engines coin rising the combination with the inclosing wa ls o fan air suction passage provided with a duct for fluid hydro-car on; a valve controlling the flowof fluid throu h said duct; and a float connected with t e valve,said float having an end portion obliquely disposed in the path of the air currents in said'passage and a central portion pertially'cut away adjacent to the valve; said float being symmetrically balanced in reference to the air currents in a position to lift without rotation.

5. A mixing valve for internal combustion engines comprising the combination with the inelosing walls of an air passage provided With an inlet aperture at one side thereof for fluid hydro-carbon; a valve controlling the flow of fluid through such aperture and provided with 'a stem extending transversely of said passage; a float mounted on said valve stem and having an inward pitch in the distem and having an inward pitch in the direction of the side of the said valve is located, sai float being arranged to receive theair pressure symmetrically," whereby the same may be lifted without rotation or lateral pressure; said float being provided with a series of perforations adapted to permit a portion of the air to pass through. c r 7. In a device of the described class, the combination with a valve for fluid hydrocarbon; a guide sleeve adjustably mounted assage at which i in a suitable support, and arranged'to guide said valve ;-and an adjustable stop located in saidsleeve and adapted to limit the movement of said valve.

8. In a device of the described class, the combination .with a valve for, fluid hydrocarbon; a guide sleeve adjustably mounted -in a suitable support, and arranged to guide said, valve; and an adjustable stop located in said sleeve and adapted to limit the movement of said valve, together with a governing device operatively connected to adjust said sleeve and stop.

9. A. mixing valve for internal combustion engines,-' comprising the combination with the inclosing walls of an air inletpassage provided with a duct for fluid; hydrocarbon leading to an inlet port at one side of the passage; and a vvalve controlling the flow of fluid throu 'h said duct; a stem connected with the valve and-extending across the passage; and an actuated float connected with said stem and inclined in the direction of the air currents in said passage and in the direction of'the side of the'passage having said inlet port; together with a guide for said valve stem; and means for regulating its movement In testimony whereof I allix my signature in the presence of two witnesses.

JEFFREY J. POWER.

- Witnesses:

JAs. B. ERWIN, LEvEnE'rT 0; WHEELER. 

